Will Smith's con-man caper "Focus" disrobed "Fifty Shades of Grey" at the box office, but the film's modest $19.1 million opening still left questions about the drawing power of the once unstoppable star.

The former Marine convicted of killing "American Sniper" author Chris Kyle and another man was hospitalized multiple times for psychiatric treatment and was prescribed medication to treat schizophrenia. He spoke of pig-human hybrids and the apocalypse and was described by Kyle himself as "straight...